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BroadConnect Canada CVI
Infrastructure

Customer Network Infrastructure

Customer Requirements Summary:

A Customer’s network design has many variables, many of which can affect the performance and quality of Voice over IP service (VOIP). For the optimal performance of the BroadCloud services, BroadCloud has a set of minimum requirements that the customer’s network must meet to ensure their business VoIP services will function as expected. These requirements apply to both SIP phones and Analog Telephone Adapters (generally referred to from this point forward as SIP devices).

Below is a summary of these requirements:

  • Customer LAN must contain a DHCP server capable of providing an IP address to SIP devices when they boot.
  • Customer LAN must contain a DNS server or provide DNS relay functionality to allow resolution of URL’s used by SIP devices to communicate with external service platforms.
  • DNS server must be capable of resolving both SRV and A records.
  • Customer firewall must allow HTTP (TCP port 80) and HTTPS (TCP port 443) traffic for SIP devices to communicate with external configuration servers.
  • Customer firewall must allow SIP and RTP to allow SIP devices to place and receive calls.
  • Customer router must set Network Address Translation (NAT) bind timer at a value greater than or equal to 30 seconds.
  • Customer router/firewall must not manipulate the SIP or RTP packets at the application layer. If any CPE devices can function as an SIP Access Layer Gateway (ALG), the ALG functionality should be disabled.
  • Customer router should support Differentiated Service Code Point (DSCP) and ensure that higher priority packets take precedence over lower priority packets for all outbound packets.
  • Customer router should be configured to mark all SIP and RTP packets from the BroadCloud call control platforms as a high priority to ensure these packets take priority over lower priority packets for all inbound packets.
  • The BroadCloud call control platforms can be uniquely identified by a set of specific IP addresses. SIP and RTP packets can be uniquely identified by the ports defined in the Firewalls section of this document.
  • Customer Internet bandwidth must be sized to allow the minimum amount of required data bandwidth plus the total number of simultaneous voice calls required by the office.
  • Customer Local Area Network (LAN) must be sized to allow the maximum amount of required data bandwidth plus the total number of simultaneous voice calls required by the office.

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